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support of view underlying tables and SP functions security check added (BUG#9505) (WL#2787)

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bell@sanja.is.com.ua
2005-10-28 00:18:23 +03:00
parent bee76b78a2
commit 1b164c7b83
24 changed files with 957 additions and 176 deletions
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48
sql/table.h
View File

@ -22,6 +22,7 @@ class GRANT_TABLE;
class st_select_lex_unit;
class st_select_lex;
class COND_EQUAL;
class Security_context;
/* Order clause list element */
@ -47,6 +48,11 @@ typedef struct st_grant_info
uint version;
ulong privilege;
ulong want_privilege;
/*
Stores the requested access acl of top level tables list. Is used to
check access rights to the underlying tables of a view.
*/
ulong orig_want_privilege;
} GRANT_INFO;
enum tmp_table_type {NO_TMP_TABLE=0, TMP_TABLE=1, TRANSACTIONAL_TMP_TABLE=2,
@ -359,7 +365,6 @@ typedef struct st_schema_table
#define VIEW_CHECK_SKIP 2
struct st_lex;
struct st_table_list;
class select_union;
class TMP_TABLE_PARAM;
@ -525,10 +530,35 @@ typedef struct st_table_list
Field_translator *field_translation; /* array of VIEW fields */
/* pointer to element after last one in translation table above */
Field_translator *field_translation_end;
/* list of ancestor(s) of this table (underlying table(s)/view(s) */
st_table_list *ancestor;
/*
List (based on next_local) of underlying tables of this view. I.e. it
does not include the tables of subqueries used in the view. Is set only
for merged views.
*/
st_table_list *merge_underlying_list;
/*
- 0 for base tables
- in case of the view it is the list of all (not only underlying
tables but also used in subquery ones) tables of the view.
*/
List<st_table_list> *view_tables;
/* most upper view this table belongs to */
st_table_list *belong_to_view;
/*
The view directly referencing this table
(non-zero only for merged underlying tables of a view).
*/
st_table_list *referencing_view;
/*
security context (non-zero only for tables which belong
to view with SQL SEURITY DEFINER)
*/
Security_context *security_ctx;
/*
this view security context (non-zero only for views with
SQL SEURITY DEFINER)
*/
Security_context *view_sctx;
/*
List of all base tables local to a subquery including all view
tables. Unlike 'next_local', this in this list views are *not*
@ -595,9 +625,9 @@ typedef struct st_table_list
bool prelocking_placeholder;
void calc_md5(char *buffer);
void set_ancestor();
void set_underlying_merge();
int view_check_option(THD *thd, bool ignore_failure);
bool setup_ancestor(THD *thd);
bool setup_underlying(THD *thd);
void cleanup_items();
bool placeholder() {return derived || view; }
void print(THD *thd, String *str);
@ -625,6 +655,14 @@ typedef struct st_table_list
return prep_where(thd, conds, no_where_clause);
return FALSE;
}
void register_want_access(ulong want_access);
bool prepare_security(THD *thd);
#ifndef NO_EMBEDDED_ACCESS_CHECKS
Security_context *find_view_security_context(THD *thd);
bool prepare_view_securety_context(THD *thd);
#endif
private:
bool prep_check_option(THD *thd, uint8 check_opt_type);
bool prep_where(THD *thd, Item **conds, bool no_where_clause);